Komatsu PC350LC-8, Operation & Maintenance Manual

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OPERATION
DETAILED CONTROLS AND GAUGES
3-99
Auto Switch
With switch (5), the air flow, vents, and air source (RECIRC/
FRESH) are automatically selected according to the set tem-
perature.
q
Press switch (5), then use temperature control switch (3) to
set the temperature, and run the air conditioner under auto-
matic control.
q
When switching from automatic operation to manual opera-
tion, it is possible to use the switches to select the vents
and air source (RECIRC/FRESH).
REMARK
When Auto Mode is selected, if the set temperature is set to
18.0 °C or 32.0 °C, the air flow is always set to High, but this is
not a problem.
FRESH/RECIRC Selector Switch
Switch (6) is used to switch the air source between recircula-
tion of the air inside the cab and intake of fresh air from the out-
side.
q
During automatic operation, the selection of inside air
(RECIRC) and outside air (FRESH) is performed automati-
cally.
Display Monitor
Monitor (7) displays the status of temperature setting (a), air
flow (b), and vents (c).
q
When OFF switch (1) is pressed, the display of tempera-
ture setting (a) and air flow (b) goes out, and operation
stops.
RECIRC
Outside air is shut off and only air inside the cab is circulated.
Use this setting to perform rapid cooling of the cab or when outside air is dirty.
FRESH
Outside air is taken into the cab.
Use this setting to take in fresh air when performing demisting.